HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved. Page 41 of 229
&K Flow Control
Note: Flow control is always hardware bi-directional flow control (both
RTS/CTS active)
Note: &K has no Read Command. To verify the current setting of &K, simply
check the settings of the active profile issuing AT&V.
Note: Hardware flow control (AT&K3) is not active in command mode.
3.5.2.2.11. Data Set Ready (DSR) Control - &S
&S - Data Set Ready (DSR) Control
AT&S[<n>]
Set command controls the RS232 DSR pin behaviour.
Parameter:
<n>
0 - always High
1 - follows the GSM traffic channel indication.
2 - High when connected
3 - High when device is ready to receive commands (factory default).
Note: if option 1 is selected then DSR is tied High when the device receives from
the network the UMTS traffic channel indication.
Note: in power saving mode the DSR pin is always tied Low
Note: if parameter is omitted, the command has the same behaviour of AT&S0
3.5.2.2.12. Ring (RI) Control - \R
\R - Ring (RI) Control
AT\R[<n>]
Set command controls the RING output pin behaviour.
Parameter:
<n>
0 - RING on during ringing and further connection
1 - RING on during ringing (factory default)
2 - RING follows the ring signal
Note: to check the ring option status use the &V command.
Note: if parameter is omitted, the command has the same behaviour of AT\R0